The JCE Administration Component and Editor Plugin have been updated and to make the process of upgrading installing easier, a new installation package is available which installs both the Administration Component and Editor Plugin in one go!
It is also no longer necessary to remove the Editor or Administration Component, or use ftp to copy the new files over the old when upgrading, an upgrade can be done just by installing!
The new package is named like the component and includes the version number of the component and the editor respectively. The current package installs Administration Component 1.5.7 and Editor Plugin 1.5.4
A special subscription package is also on the way, and a package builder is in the works so you can create your own custom package containing the plugins you install most often.
Installation and Upgrade instructions are available here